adjective, roil·i·er, roil·i·est.

turbid; muddy.

Origin of roily

First recorded in 1815–25; roil + -y1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for roily

Historical Examples of roily

  • The grass very tender and succulent, the streams full and roily.

    Fresh Fields

    John Burroughs

  • The water was not roily, but of a rich coffee-color, from the leachings of the woods.

  • No; I need a buckler till all this roily water subsides and clears.

  • His own thoughts were as that roily pool where he had ducked the old man in the darkness.

    In Exile and Other Stories

    Mary Hallock Foote

  • The water was choppy and roily, the canoe bobbed a good deal, the anchors dragged, and we did not see any fish.

British Dictionary definitions for roily


adjective roilier or roiliest

rare cloudy or muddy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012